src/controller/java/templates/CHIPEventTLVValueDecoder-src.zapt

/*
 *
 *    Copyright (c) 2022 Project CHIP Authors
 *    All rights reserved.
 *
 *    Licensed under the Apache License, Version 2.0 (the "License");
 *    you may not use this file except in compliance with the License.
 *    You may obtain a copy of the License at
 *
 *        http://www.apache.org/licenses/LICENSE-2.0
 *
 *    Unless required by applicable law or agreed to in writing, software
 *    distributed under the License is distributed on an "AS IS" BASIS,
 *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *    See the License for the specific language governing permissions and
 *    limitations under the License.
 */

#include <controller/java/CHIPAttributeTLVValueDecoder.h>

#include <app/data-model/Decode.h>
#include <app/data-model/DecodableList.h>
#include <app-common/zap-generated/cluster-objects.h>
#include <app-common/zap-generated/ids/Events.h>
#include <app-common/zap-generated/ids/Clusters.h>
#include <jni.h>
#include <lib/support/JniReferences.h>
#include <lib/support/JniTypeWrappers.h>
#include <lib/support/TypeTraits.h>

namespace chip {

jobject DecodeEventValue(const app::ConcreteEventPath & aPath, TLV::TLVReader & aReader, CHIP_ERROR * aError)
{
    JNIEnv * env = JniReferences::GetInstance().GetEnvForCurrentThread();
    CHIP_ERROR err = CHIP_NO_ERROR;
    
    switch (aPath.mClusterId)
    {
        {{#zcl_clusters}}
        case app::Clusters::{{asUpperCamelCase name}}::Id: {
            using namespace app::Clusters::{{asUpperCamelCase name}};
            switch (aPath.mEventId)
            {
                {{#zcl_events}}
                case Events::{{asUpperCamelCase name}}::Id: {
                    Events::{{asUpperCamelCase name}}::DecodableType cppValue;
                    *aError = app::DataModel::Decode(aReader, cppValue);
                    if (*aError != CHIP_NO_ERROR)
                    {
                        return nullptr;
                    }
                    {{#zcl_event_fields}}
                    {{>decode_value target=(concat "value_" (asLowerCamelCase name)) source=(concat "cppValue." (asLowerCamelCase name)) cluster=parent.parent.name depth=0 earlyReturn="nullptr"}}

                    {{/zcl_event_fields}}
                    jclass {{asLowerCamelCase name}}StructClass;
                    err = chip::JniReferences::GetInstance().GetLocalClassRef(env, "chip/devicecontroller/ChipEventStructs${{asUpperCamelCase parent.name}}Cluster{{asUpperCamelCase name}}Event", {{asLowerCamelCase name}}StructClass);
                    if (err != CHIP_NO_ERROR) {
                        ChipLogError(Zcl, "Could not find class ChipEventStructs${{asUpperCamelCase parent.name}}Cluster{{asUpperCamelCase name}}Event");
                        return nullptr;
                    }

                    jmethodID {{asLowerCamelCase name}}StructCtor;
                    err = chip::JniReferences::GetInstance().FindMethod(
                       env, {{asLowerCamelCase name}}StructClass, "<init>",
                       "({{#zcl_event_fields}}{{asJniSignature type null (asUpperCamelCase parent.parent.name) true}}{{/zcl_event_fields}})V",
                       &{{asLowerCamelCase name}}StructCtor);
                    if (err != CHIP_NO_ERROR || {{asLowerCamelCase name}}StructCtor == nullptr) {
                        ChipLogError(Zcl, "Could not find ChipEventStructs${{asUpperCamelCase parent.name}}Cluster{{asUpperCamelCase name}}Event constructor");
                        return nullptr;
                    }

                    jobject value = env->NewObject({{asLowerCamelCase name}}StructClass, {{asLowerCamelCase name}}StructCtor
                    {{#zcl_event_fields}}
                    , value_{{asLowerCamelCase name}}
                    {{/zcl_event_fields}}
                    );

                    return value;
                }
                {{/zcl_events}}
                default:
                    *aError = CHIP_ERROR_IM_MALFORMED_EVENT_PATH_IB;
                    break;
            }
            break;
        }
        {{/zcl_clusters}}
        default:
            *aError = CHIP_ERROR_IM_MALFORMED_EVENT_PATH_IB;
            break;
    } 
    return nullptr;
}

} // namespace chip